Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method for modified sepiolite and application of sepiolite in environmental restoration

A sepiolite and modification technology, applied in the field of preparation of modified sepiolite, can solve the problems of complex process, insufficient environmental protection and high preparation cost, and achieve the effects of less dosage, easy promotion and good effect.

Active Publication Date: 2017-04-26
YONKER ENVIRONMENTAL PROTECTION
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2016104067230 discloses a preparation method and application of modified sepiolite powder. The modification method requires the use of organic solvents and acid solutions, which is not environmentally friendly; the process is complicated, the preparation cost is relatively high, and the adsorption performance of heavy metal cadmium is particularly It is the adsorption / passivation performance of heavy metal cadmium in soil that needs to be further improved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method for modified sepiolite and application of sepiolite in environmental restoration
  • Preparation method for modified sepiolite and application of sepiolite in environmental restoration
  • Preparation method for modified sepiolite and application of sepiolite in environmental restoration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] This embodiment provides a method for preparing an organically modified sepiolite heavy metal cadmium adsorbent, comprising the following steps:

[0025] a. Mix 10g of natural sepiolite with deionized water at a mass ratio of 1:20, stir to form a sepiolite suspension and let stand for 24 hours to swell the sepiolite.

[0026] b. Add 1.0 g of sodium diethyldithiocarbamate into the above swollen solution, stir at 60° C. for 2 h, and then continue stirring at room temperature for 24 h.

[0027] c. Put it in a funnel, wash the solid 6 times with deionized water until the filtrate does not contain sodium diethyldithiocarbamate, dry at 60°C for 12 h, and grind to obtain organically modified sepiolite.

[0028] Such as Figure 1a and Figure 1b As shown, 470 cm -1 is Mg-O, 670 cm -1 and 800 cm -1 It is Si-O, 3676cm -1 and 3627cm -1 is-OH, 3450 cm -1 It is zeolite water, 1040cm -1 is the Si-O-Si vibration peak. 1372cm -1 and 1500cm -1 are the unique C-S and C-N vi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Maximum adsorption capacityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method for modified sepiolite and an application of the sepiolite in environmental restoration. The preparation method for the modified sepiolite comprises the following steps of (1) enabling natural sepiolite and deionized water to be mixed at a mass ratio of 1 to (10-50), stirring to form a sepiolite turbid liquid, and standing for 6-24h; (2) adding sodium diethyldithiocarbamate into the solution obtained in the step (1) and stirring, wherein the mass ratio of sodium diethyldithiocarbamate to sepiolite is (0.05-0.3) to 1; and (3) performing solid-liquid separation on the stirred solution, washing the solid body by deionized water, and drying and grinding to obtain the modified sepiolite.

Description

technical field [0001] The invention relates to a preparation method of modified sepiolite and its application in environmental restoration, belonging to the technical field of preparation of heavy metal cadmium adsorption materials. Background technique [0002] In recent years, with the development of industry and mining, heavy metals have greatly increased in quantity and variety, and a large area of ​​farmland has been polluted by heavy metals. Hunan Province is known as the "Hometown of Non-ferrous Metals". In addition, most of the farmland in the south is acidic, which is conducive to the dissolution and migration of heavy metals. The cadmium rice incident caused by farmland cadmium pollution has shocked the whole country, and farmland heavy metal pollution has become one of the most serious environmental problems, seriously threatening the quality and safety of agricultural products and the stability of agricultural regional ecosystems. The treatment of heavy metals ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J20/22B01J20/30C02F1/28B09C1/00C02F101/20
CPCB01J20/12B01J20/22B09C1/00C02F1/285C02F2101/20
Inventor 贺前锋符云聪赵瑰施刘代欢刘晨张义
Owner YONKER ENVIRONMENTAL PROTECTION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com